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Sunet de rezonanta la 2000 de turatii

Paul99
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Paul99 Newbie

Paul99

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Salut, am un bmw 420d cu motor b47. Se aude un sunet de rezonanta/vibratie in momentul cand accelerez pe la 2000 de turatii. Cu motorul rece nu se aude, iar cu clima pornita sunetul se aude mai puternic. Repet sunetul e doar de durate scurte 1/2 secunde la 2000 de turatii cand schimba treapta. Initial credeam ca e de la cutia de viteze dar am fost la verificare si nu e. Nu e nici turbina. Aveti vreo idee ce ar putea fii? Am fost la 2 mecanici care au zis ca poate fi orice, si ca sa nu imi bat capul, dar sunetul ala nu imi da pace, ma zgarie pe urechi. Multumesc!

 

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